Over the years, DNS, both the protocol and the servers, have become the target of a variety of attacks, including the Lion worm, a cache poisoning attack, social engineering attacks against registrar accounts, and distributed denial of service attacks on DNS servers.

So the DNS community developed new mechanisms to combat these attacks including access controls on queries, dynamic updates, and zone transfers; DNS security extensions; response policy zones; and response rate limiting.

You’re probably looking at this book because you’re confident enough to admit that you don’t know as much as you should about DNS security and are clever enough to look for more knowledge.

We don’t think you’ll be disappointed. This brief volume serves as a primer of many of the common terms you’ll run into, high-level descriptions of the threats you face, and practical solutions that you can implement right away.